i dont understand magnetix flux/magnetic flux density/magnetic flux linkage, could somebody explain like...all of it please. And the common exam questions that come up on it as i think its my only weak area, thanks!

Reply 1366

Doctopus

Original post by chem@uni

The ones in the spec

Thanks.

If there are certain parts of the spec that have been asked recently, in a lot of detail, then they are unlikely to be tested again. I.e - which parts of the spec haven't been asked recently in great detail.

Reply 1367

Louise6061

5

Original post by MrChemKid

in the equation I=Ie^mu X ( for x rays)

does the mu and x have to be in cm or m?

If both mu & x are given in cm keep them in cm :smile:

Reply 1368

FeelsToWaltz

2

Original post by MrChemKid

in the equation I=Ie^mu X ( for x rays)

does the mu and x have to be in cm or m?

It doesn't matter as long as they're the same unit, as the units cancel out in the calculation. So m and cm wouldn't work but cm and cm, or m and m would work!

Reply 1369

bmwdestroyer

Any advice on cramming for this exam this evening, barely done any revision at all so far, only been over some universe stuff and capacitors

Reply 1370

Malgorithm

6

Original post by MrChemKid

in the equation I=Ie^mu X ( for x rays)

does the mu and x have to be in cm or m?

If they have different units, which is unlikely, then it's easiest to convert them both into metres.

Reply 1371

mamacita

2

Original post by WillGood

Does anyobe have the 2014 paper? Only one i havent done and forgot to ask teach. Just realized that now.
Pleaseeeeeeee :wink:

https://www.dropbox.com/sh/6hx59wmymbctkav/AABP5eXxRd-JRqqXoGDhm2Sva/Physics/%3D%3D%20A2%20Core%20%3D%3D/Past%20Exam%20Papers%20-%20Question%20Papers/G485%20-%20Fields%2C%20Particles%20and%20Frontiers%20of%20Physics?dl=0

Reply 1372

Tazmain

8

Original post by mamacita

https://www.dropbox.com/sh/6hx59wmymbctkav/AABP5eXxRd-JRqqXoGDhm2Sva/Physics/%3D%3D%20A2%20Core%20%3D%3D/Past%20Exam%20Papers%20-%20Question%20Papers/G485%20-%20Fields%2C%20Particles%20and%20Frontiers%20of%20Physics?dl=0

Do you have the markscheme as well?

Reply 1373

FeelsToWaltz

2

Original post by bmwdestroyer

Any advice on cramming for this exam this evening, barely done any revision at all so far, only been over some universe stuff and capacitors

Don't do any so we get lower grade boundaries!

No but seriously, I suggest making sure you're completely familiar with everything in the formula booklet, and making some notes on the big topics that could come up i.e gamma cameras, MRI, CAT scans, evolution of the universe etc..

Reply 1374

jamesbird18

4

My predictions
- Some **** question on the structure of the atom or universe
- Evolution of the universe
- gamma camera
- a difficult graph

Reply 1375

Zenarthra

3

What hasnt been on the spec rcently

Reply 1376

mamacita

2

Original post by Tazmain

Do you have the markscheme as well?

https://www.dropbox.com/sh/6hx59wmymbctkav/AADoMocXBQZpHr_w_9JC7Roka/Physics/%3D%3D%20A2%20Core%20%3D%3D/Past%20Exam%20Papers%20-%20Mark%20Schemes/G485%20-%20Fields%2C%20Particles%20and%20Frontiers%20of%20Physics?dl=0

:wink:

Reply 1377

chem@uni

9

Original post by Doctopus

Thanks.

If there are certain parts of the spec that have been asked recently, in a lot of detail, then they are unlikely to be tested again. I.e - which parts of the spec haven't been asked recently in great detail.